Remove pry from gemspec for JRuby compatibility

pry-debugger doesn't compile on JRuby, and we're really only using that
locally.

Gemfile

@@ -2,6 +2,12 @@ source "https://rubygems.org"
 
 gemspec
 
-gem "jruby-openssl", :platform => :jruby
-gem "activerecord-jdbcsqlite3-adapter", :platform => :jruby
-gem "sqlite3", :platform => :ruby
+platform :jruby do
+  gem 'jruby-openssl'
+  gem 'activerecord-jdbcsqlite3-adapter'
+end
+
+platform :ruby do
+  gem 'pry'
+  gem 'pry-debugger'
+end

paperclip.gemspec

@@ -45,8 +45,6 @@ Gem::Specification.new do |s|
   s.add_development_dependency('capybara', '= 2.0.3')
   s.add_development_dependency('bundler')
   s.add_development_dependency('fog', '~> 1.0')
-  s.add_development_dependency('pry')
-  s.add_development_dependency('pry-debugger')
   s.add_development_dependency('launchy')
   s.add_development_dependency('rake')
   s.add_development_dependency('fakeweb')

test/helper.rb

@@ -13,7 +13,12 @@ require 'shoulda/context'
 require 'mime/types'
 require 'pathname'
 require 'ostruct'
-require 'pry'
+
+begin
+  require 'pry'
+rescue LoadError
+  # Pry is not available, just ignore.
+end
 
 puts "Testing against version #{ActiveRecord::VERSION::STRING}"